The biggest problem in the use of traditional medical instruments is not thorough disinfection which can easy to form cross infection. Such as arm fracture can be fixed with pulp model. It can increase skin permeability so that restore faster. If we can use of molded pulp tray, disposable spittoon, bedpan, surgical disc pad, splint, not only can be used for disinfection, but also has the advantages of labor saving and waste incineration.